Do you want your music in Rock Band?

The Rock Band Network is a revolutionary system which will allow bands, studios and record labels to create and sell playable game content from their master recordings using the same professional tools used by the game’s developers.

You will be able to upload and submit your tracks for review by the Rock Band Creators community. These experienced “rhythm game” players will critique your music and approved tracks will become available in the Rock Band Store and on the Xbox LIVE Marketplace. You’ll get a cut of every purchase.

Go here for more info.